EP 0398462 A3 19910206 - PROCEDURE AND EQUIPMENT FOR OPTICAL SPARK-EMISSION SPECTROMETRY
Title (en)
PROCEDURE AND EQUIPMENT FOR OPTICAL SPARK-EMISSION SPECTROMETRY
Publication
Application
Priority
DE 3916833 A 19890519
Abstract (en)
[origin: EP0398462A2] In a procedure for optical spark-emission spectrometry in which a spark plasma of a sample is produced in a spark chamber and is evaluated by spectrum analysis using a spectral apparatus connected, in particular optically, to the spark chamber via a connection space, the connection space and the spark chamber having a protective gas continuously flowing through them during a spark process, a flushing pressure is built up in the gas system upstream of the spark chamber. The sudden release of this flushing pressure, for example, before the start of the subsequent spark process brings about a surge-like flow of the volume of flushing gas released in the spark chamber and, consequently, a complete removal of any burn-up residues or air components from the spark chamber. The gas flow can be interrrupted during the standby time. Equipment for carrying out the procedure comprises a spark chamber with an inlet for the flushing gas which can be sealed gastight by means of a shut-off device which can be opened suddenly. <IMAGE>
IPC 1-7
IPC 8 full level
G01J 3/443 (2006.01); G01N 21/31 (2006.01); G01N 21/62 (2006.01); G01N 21/67 (2006.01)
CPC (source: EP)
G01N 21/67 (2013.01)
Citation (search report)
- [A] DE 2705815 A1 19770818 - RANK ORGANISATION LTD
- [A] US 3815995 A 19740611 - WALTERS J, et al
- [A] US 3672774 A 19720627 - BOJIC MILAN, et al
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0398462 A2 19901122; EP 0398462 A3 19910206; EP 0398462 B1 19930818; AT E93318 T1 19930915; DE 3916833 A1 19901122; DE 59002367 D1 19930923
DOCDB simple family (application)
EP 90250131 A 19900518; AT 90250131 T 19900518; DE 3916833 A 19890519; DE 59002367 T 19900518